Assayer&#39;s pulverizing apparatus.



No. 746,104. PATENTBD DBC. 8,1903'.

J..Q. A. KING. AssAYBRs PULV'BRIZING APPARATUS.

APPLICATION FILED MAR.11, 1903.

. N0 MODEL.

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` front elevation, and Fig. 3 is a partial ver' i UNITED. STATES atentedDecember 8, 1903. y

PATENT OFFICE.

JOHN Q. A. KING, OF PHOENIX, ARIZONA TERRITORY, ASSIGNOR OF. ONEv HALFTO FRANK H. STANWOOD, OF LOWELL, MASSACHUSETTS.

AssAYi-:Rs PULvERlzlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 746,104, dated December8, 1903.

Application filed March l1. 1903. Serial No. 1471296. (No model.)

Tov all whom it may concern:

Be it known that I, JOHN Q. A. KING, acitizen of the United States,residing in Phoenix, in the county of Maricopa and Territory of Arizona,have invented a new and useful Improvement in Assayers PulverizingApparatus, of which the following is a specification.

vThis invention relates to an improved construction of bucking-.boardand muller for pulverizing ore. As heretofore used the muller has alwaysbeen-operated by hand, the operator pressing it down on the material ashe works the muller back and forth over the bucking-board with a rockingmotion. The operation is slow and arduous and requires the attendantsentire time. My endeavor in the present invention has been to devisemeans for operating the muller by p ower, so that it shall have bot-l1the reciprocating and rocking motion of the hand-muller and also exertthe 'necessary pressure on the ore being pulverized, and I accomplishthis end by the means hereinafter set forth.

In the accompanying drawings, forming part of this specification,Figui-e1 is aperspective of my invention. Fig. 2 is a partial ticalsection on the line 3 3 of Fig. 2.

In said drawings, 5 represents a table, on which two fiat-surfacedbucking-boards 6 6 of the ordinary construction are mounted. A separaterubber or muller 7 is provided for operating on each board, the samebeing preferably of a width corresponding substantially to that of theboards, so that they may operate on all the ore without receiving anysidewise motion and having a rounded under surface. The mullers havecentrally-located upwardly-projecting ribs 8, with transverse openingsthrough them, whereby the mullers may be attached to pitmen 9 9 andwhereby they may be actuated by power from a shaft 10, having formed init a separate crank 11 for each pitman. The shaft is located only ashort distance above the plane ofthe table, so that the thrust and pullsimparted to the pitmen by the cranks will cause the mullersto move inahorizontal direction and to rock as they move. l

In order that the mullers may press downward upon the ore with thenecessary pressure to secure proper action, I. make them quite heavy ascompared with the hand-muller. Their gravity added to that of the pitmenwill be sufficient for this purpose.

The mullers and bucking-boards require to be cleaned after pulverizingeach sample lot of ore, and to enable this to be done readily I attacheach muller by means of a flexible 6o connection 12 to one end of thelever 13, pivoted between its ends to a bar 14, located over theapparatus. From the other end of the lever a depending cord or wire l5depends, and in this cord or wire a button or stop 16 65 is secured,such button o r stop being adapted tov engage the notched board or plate17, suspended rigidly from the ceiling or framework' above theapparatus. By means of these devices either or both of the mullers maybe 7o raised from their acting positions at will and retained in theraised positions as long as desired by catching the buttons undertheplate 17, and one muller is shown thus raised in Fig. l. The flexibleconnections 12 permit 75 the mullers while raised to move freely withthe cranks, so that it is unnecessary to dis-v connect them from thecranks at such times. They may be disconnected, however, if preferred.

I have shown in the drawings a double machine, and in such places preferto place between the bucking-boards a division-plate or partition 18,whereby any particles of ore which may ily in that direction may bepre-y vented from entering the other buckingboard. This plate is, ofcourse, not present in machines embodying only a single bucking-board,and although the double form of machine is a desirable constructionitwill be 9o understood that I do not wish to be limited thereto in myclaims.

The shaft is operated in any suitable way.

I have'shown it as carrying a pulley 20, receiving power by belt 2l froma--pulley on 95 shaft 22, driven from the electric motor 23 by the belt24.; but any other motor may be used, y and the connect-ions between themotor and shaft may also be greatly varied from those shown.

While the mullers are in operation they are entirely independent of thesuspending IOO devices, so that their entire gravity is einA erted onthe material. It will also be noted that their attachment to tbe pitinanis a rigid one, so that they cannot tip to either side. This isimportant, because it the material is larger upon one side of the boardthan n pon the other the muller cannot tip to accommodate itself to thematerial, but is compelled to first reduce the larger material to thesize of the smaller before the latter are operated upon, so that allparts of the material are treated evenly and reduced to the same extent.

I claiml. The ore-pulverizing apparatus consisting of a fiat-surfacedbucking-board, a muller resting by gravity upon the board, a inotor, acrank-shaft driven 'oy the motor and located in the same or nearly thesame horizontal plane with the board, and a pitnian freely joined to thecrank and rigid with the muller, and serving to impart both areciproeatingr and a rocking motion to the inuller.

2. Tbeore-pulverizing apparatus consisting of a bucking-board, a niullerresting by gravity upon the board,a motor, a crank-shaft driven by themotor and located in the same or nearly the saine horizontal plane withthe board, and a pitrnan freely joined to the crank and rigid with thein nller, and serving to impart both a reciprocating and a rockinginotion to the lnnller.

The apparatus for pulverizing ore embracing a bucking-board on which theore is placed, a innller constantly restingby gravity upon the board, ainotor, a crank-shaft driven by the motor and located substantially inthe saine horizontal plane with the board, and a pitinan freely joinedto the crank and rig idly joined to the niuller.

4. The combination in ore-pulverizing apparatus, of a bnclring-board, apower-driven gravity-millier mounted on the end of a horizontal pitman,and means for raising tl1einuller from its acting position at will.

5. The ore-pulverizing. apparatus,colnprising a bucking-board, apower-driven grav ity-innller, a horizontal pitinan to which thein'uller is secured, a crank-shaft for driving said pitlnan, and meansfor raising and snpporting the in 1111er above its acting position, saidsupporting means being adapted to permit the innller to continue inmotion after being raised.

JOHN Q. A. KING.

Witnesses:

SANFORD W. HAINns, ROBERT FRIEDEL.

